Having asked this in the general discussion forum and not had any response I am going to assume this is a straight bug...

I recently downloaded Synth One (Audiokit's excellent freeware synth - highly recommended if you are into Synths) and would like to use some of the sounds in my pieces.

I assume/assumed this would be possible using Inter App Audio. I haven't used IAA Instruments before so I could be missing something but the steps, according to the manual should be:
- Tap FX button
- Select 'Audiokit Synth One (inst)' from the list of available plugins

According to the manual the following things should happen
1 - The selected Track in Auria should switch to Record
2 - The interface should switch to the Synth One interface
3 - An IAA transport control bar should appear

In my case the Synth one Interface does appear but
1 - The input source stays on Mic (I have a pair of Apple headphones plugged in which also include a mic input) and
2 - The IAA transport bar does not appear

I've added a couple of screenshots of what I am seeing on my iPad (Pro running iOS 12.01)

As I said - I am assuming this is a bug (but if it isn't then can someone please let me know what I am doing incorrectly).